Myrmeleontidae, Latreille, 1802

Badano, Davide & Pantaleoni, Roberto Antonio, 2014, The larvae of European Myrmeleontidae (Neuroptera), Zootaxa 3762 (1), pp. 1-71 : 8-9

publication ID	https://doi.org/ 10.11646/zootaxa.3762.1.1
publication LSID	lsid:zoobank.org:pub:68E063AB-2C09-4FCA-8761-FBC73D562990
DOI	https://doi.org/10.5281/zenodo.4909361
persistent identifier	https://treatment.plazi.org/id/314A4C26-9C7F-2A3A-EFC1-58F4FA1D598F
treatment provided by	Felipe
scientific name	Myrmeleontidae
status

Treatment

Key to the European larvae of Myrmeleontidae View in CoL View at ENA

1 IX abdominal sternite of 2 nd and 3 rd instar with fossoria ( Fig. 2A View FIGURE 2 , 7 View FIGURE 7 )........................................ Palpares View in CoL

- IX abdominal sternite without fossoria ( Figs. 2 View FIGURE 2 , 3 View FIGURE 3 , 6 View FIGURE 6 ).......................................................... 2

2 Mesothorax with a median tuft of hair-like setae; IX sternite conical, longer than wide; mesothoracic spiracle not raised on tubercle ( Figs. 3A View FIGURE 3 , 8 View FIGURE 8 )........................................................................... Dendroleon View in CoL

- Mesothorax without a median tuft of setae; IX sternite wider than long ( Figs. 3B–H View FIGURE 3 )................................3

3 Mesothorax with pedunculated or sub-peduncolated setiferous processes ( Fig. 1C View FIGURE 1 )................................. 10

- Mesothorax with sessile setiferous processes only ( Fig. 1B View FIGURE 1 )....................................................4

4 External margin of the mandible with a fringe of long setae reaching the apical tooth; basal setae longer than the width of the mandible ( Fig. 1B View FIGURE 1 )....................................................................................5

- External margin of the mandible with a small basal group of setae, not reaching the apical tooth and shorter than the width of the mandible ( Fig. 25 View FIGURE 25 ).................................................................................. 9

5 The median tooth is the largest, IX sternite with prominent rastra ( Figs. 2B–D View FIGURE 2 , 21 View FIGURE 21 ).................................. 6

- The apical tooth is the largest, IX sternite without prominent rastra ( Figs. 6 View FIGURE 6 , 26 View FIGURE 26 ).................................... 8

6 Median and apical mandibular teeth directly in contact, without setae between them ( Fig. 21 View FIGURE 21 )............. Myrmecaelurus View in CoL

- Median and apical mandibular teeth spaced by 1–2 setae ( Fig. 22 View FIGURE 22 )...............................................7

7 IX sternite thickly covered with small digging setae, also disposed on the ventral surface of rastra.................................. Nohoveus (from Ábrahám & Papp 1990; Gepp 2010; Krivokhatsky 2011 and verified on non-European species)

- IX sternite covered with few very large digging setae, 1 large digging seta at the base of each rastrum ( Figs. 2C–D View FIGURE 2 )................................................................................................... Cueta View in CoL (key 5)

8 Presence (exclusive or not) of spiniform or stout setae on the posterior margin of the VIII abdominal sternite ( Figs. 6A–H View FIGURE 6 )... Myrmeleon View in CoL (key 6)

- Posterior margin of the VIII abdominal sternite exclusively covered by hair-like setae ( Fig. 6I View FIGURE 6 )................. Euroleon View in CoL

9 Anterior margin of the labrum with a pronounced rounded lobe; mandibles swollen at the base; VIII sternite covered with digging setae ( Fig. 24 View FIGURE 24 ).......................................................................... Acanthaclisis View in CoL

- Anterior margin of the labrum without a lobe; mandible not swollen; VIII sternite without digging setae ( Fig. 25 View FIGURE 25 )... Synclisis View in CoL

10 VIII abdominal sternite with prominent odontoid processes ( Figs. 3B–F View FIGURE 3 ).........................................11

- VIII abdominal sternite without or with very reduced odontoid processes ( Figs. 3G–H View FIGURE 3 )............................. 15

11 Dorsal surface of the head and pronotum covered by white scale-like setae ( Figs. 4B View FIGURE 4 , 9 View FIGURE 9 )....................... Nemoleon View in CoL

- Dorsal surface of the head and pronotum covered by dark bristle-like setae ( Figs. 4C–H View FIGURE 4 )............................ 12

12 IX sternite with an anterior group of ventral digging setae; mandibles very robust; basal and median teeth closer to each other than to the distal tooth ( Figs. 3D View FIGURE 3 , 10 View FIGURE 10 )............................................................... Creoleon View in CoL

- IX sternite without an anterior group of ventral digging setae, mandibles comparatively slender, teeth equidistant ( Figs. 3E–F View FIGURE 3 ). ................................................................................................... 13

13 Pronotum with 4 dorsal parallel series of large setae ( Figs. 4F View FIGURE 4 , 11 View FIGURE 11 ).................................... Macronemurus View in CoL

- Pronotum without distinct dorsal parallel series of setae ( Figs. 4C, E View FIGURE 4 )........................................... 14

14 Pronotum covered by long setae interspersed by short spiniform ones; rastra of IX sternite with digging setae of similar size ( Figs. 3C View FIGURE 3 , 4C View FIGURE 4 , 12 View FIGURE 12 )........................................................................ Distoleon View in CoL (key 2)

- Pronotum covered by long setae interspersed by dolichasters; rastra of IX sternite with inner digging seta long a half of the longest pair ( Figs. 3E View FIGURE 3 , 4E View FIGURE 4 )................................................................... Neuroleon View in CoL (key 3)

15 Distance between the base of the mandible and the basal tooth longer than that between the basal and apical teeth; median and apical teeth equal sized; rastra of IX sternite with inner digging seta long a half the others ( Figs. 3H View FIGURE 3 , 20 View FIGURE 20 )...... Gymnocnemia View in CoL

- Distance between the base of the mandible and the basal tooth shorter than that between the basal and apical teeth; apical tooth larger than the median tooth; rastra of IX sternite with inner digging seta long less than a third the others ( Figs. 4G View FIGURE 4 , 18 View FIGURE 18 )........................................................................................... Megistopus View in CoL (key 4)